单项选择题

As an experienced technician, you are responsible for Technical Support. A customer calls to ask the best signal level and noise level for cell phone. How to respond?（）

A. -40dBm signal and -90dBm noise
B. -50dBm signal and -90dBm noise
C. -30dBm signal and -90dBm noise
D. -20dBm signal and -90dBm noise

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单项选择题

As an experienced technician, you are responsible for Technical Support. Which of the following descriptions is correct about the characteristic of SLB one arm mode?（）

A. This out-of-band approach supports scaling
B. SLB is not inline.
C. Mode is not as common as bridge or routed mode.
D. Return traffic requires PBR, server default gateway pointing to SLB, or client source NAT.

单项选择题

As an experienced technician, you are responsible for infrastructure design and global configuration changes. You are asked to deploy a Voice over Wireless LAN for your company. If the cells have the same channel, the separation between them should be:（）

A.19dbm
B.10dbm
C.67dbm
D.86dbm